Top roll for textile drawing mechanisms



May 18, 1954 R. K. BUTLER TOP ROLL FOR TEXTILE DRAWING MECHANISMS FiledMarch 23, 1949 pI/ll/l/ld v INVEN TOR. RICHARD K. BUTLER BY Patented May18, 1954 *NrrEo or FlGrE TOPROLIY FUR TEXTIL'ZE DRAWING MECHANISMS;Richard K; Butler, Whitman, Mass., 'assignqn by :mesne assignments, toTextileEngineering Cornotation, whitman -Mass a corporation bframification March 23, 1949, Serial No. 82,974

. 'ldfTClaims. ,1

, aThismalaplication is a continuationuin part of "myxpendingapplicationSerial No. 45,045,.filed ;.-1August 19,1948.

The present ,invention. is. an improvement in sdrawingzrolls .used: forthe drafting of textile -i ?.fibel'S r in l the; production of. sliver;roving, and :yyarn and relates, particularly to: top .rolls of the--:.so.-;called.so1id type in whichthe-enti-re-roll ro- .-..tates,asa.unit; and which conventionally comva priseatcast iron orwsteelbody-having two-.:inte-:

gral enlar ements onbosses connected bya readueedaori-neck portion-andalsohavin an integralvreducedrportiorr projecting. from'the outermendwo'fteach boss forming a gudgeonor journal, ultheabossesbeing-covered with cots ofv leather or psyntheticpr. :othen-non-metalliccushioning marteria-l having a", ,moderatewamount of resilience, wwhiclrcots ride on thefluted lower rolls which are: driven andaimpartrrotationtor the top rolls.

To grip and thus draw the strandstof silver or and the. coengaging:stationary surface-of the V saddle which bears down. on" the. neck' .toweight ..-the roll,ras well asfthat arising between. the bearingsurfaces of 'the gudgeonsand'fthe slots inithe .lcap -bars which serveas'l bearings therefor.

.These bearing. surfaces on the custo-maryroll,

beingfof castiiron. or.ste"e1,.have a relatively rapid ,ratesof wearand-becomeworri tosuch' a degree ...to impair l'their usefulness, withi'the result that the entire roll" must "be' discarded because acceptedas a" necessary incident of established "manufacturing procedure, thisreplacement is still a substantial and continuallwrecurring"elem'ent ofexpense irflthe' industry.

Toprevent intolerably rapid wear crane-necks and *gudgeons =of therolls, lubricationirmust 'i be uppliedf but the lubricant useda' mustbetu'apthe?utmosti restraintaandzaccuracy ito the. brearingsurfaeesialone,1-:botlrabecauserthe v oil (URN-142) onthe necks v andgudgeons, under :thesaddle, ,andin the cap bar slots; and also because:any spot or film of oil .on the cots oron the fibrous material beingdrafted interferes with thedrawingand damages the material. Thus,frequent wcleaning of the rolls and saddles, and-cleaning of the capbars,=is compelled by the accumulation of lint and fly when oil is used.

. It is-the object of the. present invention wto provide a top. rollconstruction-in which these objectionable features of operation will bet obviated.

To this end, the invention comprises a top roll tprovided withremovablerand replaceable elements forming. the bearingxsurfaces,preferably both on the neck: and on the gudgeons or jour- .nals, and inits preferred embodiment these replaceable elements, or at least theirbearing surcfaces are formed of synthetic material characterized bysuperior frictional characteristics resducinglorobviating the necessityfor the use of alubricanttherefor. Hence the expenditure of time,effort, and care heretofore. required for lubricating the rolls and incleaning them. and

their saddles and cap bars from collected fly and lint caught by thelubricant, are avioidedaor greatly reduced. Further when damage or wearoccurs to impair the bearing surfaces of the rolls,

. the rollsdo nothave to be discarded, but are simply supplied with newelements providing .the bearing surfaces-and thus are restored. .to fullutility. in. these respects.

An illustrative embodiment of the invention .=-is shownintheaccompanyinginvention in which T inafter.

fiend Fig. 4 a: section on line 4 4.01? Fig. 2.

Other objects of the invention, and themanwner-of their attainment, areas made plainvhere- :In the; preferred. embodiment illustrated, .fthe

improved roll comprisesa-shaft i havinglsleeves 3 oftmetal or othersuitable material. fittediicloseincapable of being effectively?repaired. wl'iileii-zid =ly' but slidably thereon to: form.- thelbosses. on which tubularcots' 5 of rubber, leatheigor other suitable vcomposition are adhesively mounted. .--As customary, a portion i of theexterior of each boss 3 is knurled to provide a better. grip Lfor theadhesive employed to cement thecot thereto.

iTomaintainthe-bosses 3 in proper spaced relation to suit the gageof,the-particular-drawing a-or roving frame in -whichothese rollsaretiused,

aone-ormore sleeves 9, .l I., ifitting closelyb'utslid- 3 to maintainthe latter in properly spaced relation.

Sleeve 9 located at midlength of the roll is in accordance with thepreferred form of the in vention formed of material having aco-efiicient of friction so low that the application of a lubricantthereto is unnecessary or seldom needed. Examples of materials of thisclass are the high molecular weight synthetic plastic compounds such asthe poly-amide polymers described in Carrothers Patent No. 2,130,948, ofwhich the material supplied under the name of nylon by E. I. Du Pont deNemours Co., Wilmington, Delaware, are a related synthetic plasticmaterial supplied by them under the trade name of Teflon, are especiallysuitable; also the polyvinyl series of resins, ethyl cellulose,cellulose acetate, and others. The sleeve 9 is made of sufficient lengthto exceed the width of the saddle (not shown) of the weighting mechanismused to weight the top roll, and in the case of narrow gage framescomprises the sole spacing element interposed between and engaged by thetwo bosses 3. When frames of wider gage are to be equipped with theimproved rolls, the sleeves I! made of metal or other preferred materialare employed, of equal length and disposed symmetrically at each side ofthe synthetic sleeve 9, to hold the bosses 3 further apart, a shaft I ofappropriate length for the gage of the frame being used in eachinstance.

To hold the described parts of the roll in place, each extremity ofshaft i is bored axially and threaded as indicated at E3, and a member ipreferably of the same or similar synthetic plastic material as thesleeve 9 engaged by the saddle, or of any of the aforenamed plasticmaterials, is affixed to each end of shaft l, in axial alignmenttherewith by means of a screw ll threaded into the bore I3. This memberi5 has a cylindrical portion 59 fitting closely within the bore of theouter end of the proximate boss 3, and a shoulder at the junction ofreduced portion it with its portion 2| of greater diameter which bearsagainst the end of boss 3 to force the latter inward along shaft 1 whenscrew I"? is tightened.

As is obvious, the members l5 constitute the gudgeons or journals of theroll, and the cylindrical surfaces 21 form the bearing surfaces engagingthe slots of the cap bars (not shown).

To hold the bosses 3 and the bearing sleeve 9 against relative rotationwith respect to the shaft I, the latter is preferably keyed to theinterior of each of these elements, herein by making shaft l hexagonal,and shaping the interior passage through sleeve 9 and the inward half ortwo-thirds of the length of the passage through each boss 3 of matchinghexagonal shape, such that these parts can slide easily along. shaft I,but cannot rotate thereon, as shown in Fig. 3. The outer one-third orhalf of the length of the passage in each boss 3 is of circular section,as shown in Fig. 4, thus permitting the journal-forming member l5 andits retaining screw ii to be rotated as a unit in installing member I5in the end of the roll; it

is preferred to seat the screws H in the axial bore and counterboreformed for its reception in member It with a press fit, so that thesetwo parts may be handled as a unit in inserting, re- .moving, andreplacing.

From the foregoing it will be seen that rolls of various lengths to suitvarious gages of frames are made up of the same bosses 3, center bearingsleeves 9, and journal members I 5, by merely employing differentlengths of shafts l, and using or omitting the spacer sleeves II. Itwill likewise be evident that in the event of injury or wear requiringreplacement of any or all of the bearing surfaces on sleeves 9 orjournal members l5, these members can be quickly and easily removed byunscrewing one or both of the journal members i5 to release all theparts, followed by replacement of those which need renewal with newmembers.

The construction prevents all tendency of unscrewing of the journalmembers l5, which hold the roll assembled in rigid unitary relation, byany fortuitous twisting force tending to revolve one boss with respectto the other or to the shaft I; but a turn or two of the screws H bymeans of a wrench applied to the sockets in their heads releases all theparts for dis-assembling by the fingers alone.

The countersinking of the heads of screws l'l fiush with the extremitiesof journal members I5 avoids the creation of projections or angles forthe lodgement of lint and fly.

The nature of the preferred materials used to provide the bearingsurfaces on the journals and center or saddle bearing makes them capableof running without undue wear in the total absence of applied lubricant,or with unprecedentedly small amounts in cases where abnormal weightingmakes lubrication necessary.

While I have illustrated and described a certain form in which theinvention may be embodied, I am aware that many modifications may bemade therein by any person skilled in the art, without departing fromthe scope of theinvention as expressed in the claims. Therefore, I donot wish to be limited to the particular form shown, or to the detailsof construction thereof, but

What I do claim is:

l. A top roll for the drawing mechanisms of spinning and roving frames,comprising in combination a roll body including two bosses nonrotatablerelative to each other for supporting the customary cots, rollsupporting members, and screw means aflixing such members nonrotatablyto the ends of the roll body.

2. A top roll for the drawing mechanisms of spinning and roving frames,comprising in combination a roll body including two bosses nonrotatablewith respect to each other and to the roll body for supporting thecustomary cots, journal members, and screw means afiixing such membersto the end portions of such roll body in cperatively fixed relation forrotation therewith, and with capacity for removal and replacement Whenworn. v

3. A top roll for the drawing mechanisms of spinning and roving frames,comprising in combination two bosses for supporting the customary cots,a member holding the bossesagainst relative rotation and in coaxialrelation, and means fixed to each end of such member preventing escapeof the bosses therefrom and extending beyond the bosses to form pintlessupporting the roll in its bearings.

4. A top roll for the drawing mechanisms of spinning and roving frames,comprising in combination two bosses for supporting the customary cots,a member holding the bosses against relative rotation and in coaxialrelation, spacing means on such member between the bosses, and gudgeonsnon-rotatably and releasably; secured to such member holding the bossesagainst the spacing means.

A top roll for the drawing mechanisms of spinning and roving frames,comprising in combination a shaft and bosses thereon, cots on thebosses, spacing means on the shaft holding the bosses apart, andgudgeons non-rotatably fixed on the ends of such shaft and holding thebosses against escape from the shaft.

6. A top roll for the drawing mechanisms of spinning and roving frames,comprising in combination a shaft and bosses thereon, cots on thebosses, spacing means on the shaft holding the bosses apart, andgudgeons non-rotatably fixed on the ends of such shaft holding the partsof the roll in assembled relation.

7. A top roll for the drawing mechanisms of spinning and roving frames,comprising in combination a shaft and bosses thereon, cots on thebosses, spacing means on the shaft holding the bosses apart and having aportion forming a saddle-supporting surface, and gudgeons nonrotatablyand releasably secured to the ends of such shaft positioning the bossesand spacing means lengthwise of such shaft.

8. A top roll for the drawing mechanisms of spinning and roving frames,comprising in com bination a shaft, two bosses slidably supported onsuch shaft, cots on the bosses, spacing means slidable on the shaftbetween the bosses, and gudgeons non-rotatably amxed to the ends of theshaft and cooperating with the spacing means to hold the bosses inoperatively fixed positions in the length of the shaft.

9. A top roll for the drawing mechanisms of spinning and roving frames,comprising in combination a shaft, two bosses slidably but nonrotatablysupported on such shaft, spacing means on the shaft between the bosses,and means on the ends of the shaft forcing the bosses against thespacing means and extending outwardly beyond the shaft and bosses toform journals for the roll.

10. A top roll for the drawing mechanisms of spinning and roving frames,comprising in combination a shaft, two bosses slidably but nonrotatablysupported on such shaft, spacing means on the shaft between the bosses,and gudgeons affixed to the shaft preventing axial movement of thebosses along the shaft.

11. A top roll for the drawing mechanisms of spinning and roving frames,comprising in combination a shaft and a plurality of bosses thereon inmutual splined engagement preventing relative rotation, spacing meansmounted on the shaft between bosses in slidable but non-rotatablerelation to the shaft, and means in screw engagement with theextremities of the shaft projecting beyond the outer ends of the bossesto form journals for the roll.

12. A top roll for the drawing mechanisms of spinning and roving frames,comprising in combination a shaft polygonal in section throughout atleast a portion of its length, a plurality of bosses each having anaxial passage shaped to match the polygonal cross section of the shaftthroughout a portion of the length of such passage and a cylindricalshape for another portion of the length of such passage, spacing meanson the shaft between the bosses, and gudgeons screwed to the ends ofsuch shaft each having a portion fitting within the cylindrical portionof the passage through a boss.

13. A top roll for the drawing mechanisms of spinning and roving frames,comprising in combination, a shaft of polygonal cross-section, bosseshaving axial passages conforming throughout a part only of their lengthto the shape of the shaft slid-ably but non-rotatably mounted on theshaft, spacing means between the bosses having a saddle-supportingsurface of synthetic material, gudgeons extending within non-polygonalportions of the passages through the bosses and projecting beyond theouter ends of the latter and also having bearing surfaces of syntheticmaterial, and screw means affixing the gudgeons to the ends of theshaft.

14. A top roll for the drawing mechanisms of spinning and roving frames,comprising in combination a shaft, a sleeve thereon of syntheticmaterial forming a saddle-supporting surface, spacing elements slidableon such shaft and located at each side of the said sleeve, bossesslidable on the shaft engaging the spacing elements, gudgeons ofsynthetic material projecting axially from within the bosses, and screwmeans on the shaft forcing the gudgeons axially against the bosses tourge the latter inwardly against the spacing elements and the spacingelements in turn against the sleeve.

References Gited in the file of this patent UNITED STATES PATENTSNumb-er Name Date 949,504 Sexton Feb. 5, 1910 981,307 Ragsdale Jan. 10,1911 1,897,137 Meynell Feb. 14, 1933 2,072,642 Martin Mar. 2, 19372,246,086 Austin June 17, 1941 2,256,193 Cobb Sept. 16, 1941 2,355,510Cobb Aug. 8, 1944 FOREIGN PATENTS Number Country Date 311,211 GermanyFeb. 28, 1919 364,444 Italy July 27, 1938 677,776 France Mar. 14, 1930

